libsupport: Add 64-bit time_t support for stat functions

The patch adds redirections for xstat, xlstat, and xfstat when
_TIME_BITS=64 is defined.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>

support/Makefile

@@ -40,7 +40,9 @@ libsupport-routines = \
   resolv_test \
   set_fortify_handler \
   support-xfstat \
+  support-xfstat-time64 \
   support-xstat \
+  support-xstat-time64 \
   support_become_root \
   support_can_chroot \
   support_capture_subprocess \
@@ -117,6 +119,7 @@ libsupport-routines = \
   xlisten \
   xlseek \
   xlstat \
+  xlstat-time64 \
   xmalloc \
   xmemstream \
   xmkdir \

support/support-xfstat-time64.c

@@ -0,0 +1,32 @@
+/* 64-bit time_t stat with error checking.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* NB: Non-standard file name to avoid sysdeps override for xstat.  */
+
+#include <support/check.h>
+#include <support/xunistd.h>
+#include <sys/stat.h>
+
+#if __TIMESIZE != 64
+void
+xfstat_time64 (int fd, struct __stat64_t64 *result)
+{
+  if (__fstat64_time64 (fd, result) != 0)
+    FAIL_EXIT1 ("__fstat64_time64 (%d): %m", fd);
+}
+#endif

support/support-xstat-time64.c

@@ -0,0 +1,32 @@
+/* 64-bit time_t stat with error checking.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* NB: Non-standard file name to avoid sysdeps override for xstat.  */
+
+#include <support/check.h>
+#include <support/xunistd.h>
+#include <sys/stat.h>
+
+#if __TIMESIZE != 64
+void
+xstat_time64 (const char *path, struct __stat64_t64 *result)
+{
+  if (__stat64_time64 (path, result) != 0)
+    FAIL_EXIT1 ("__stat64_time64 (\"%s\"): %m", path);
+}
+#endif

support/xlstat-time64.c

@@ -0,0 +1,32 @@
+/* 64-bit time_t stat with error checking.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* NB: Non-standard file name to avoid sysdeps override for xstat.  */
+
+#include <support/check.h>
+#include <support/xunistd.h>
+#include <sys/stat.h>
+
+#if __TIMESIZE != 64
+void
+xlstat_time64 (const char *path, struct __stat64_t64 *result)
+{
+  if (__lstat64_time64 (path, result) != 0)
+    FAIL_EXIT1 ("__lstat64_time64 (\"%s\"): %m", path);
+}
+#endif

support/xunistd.h

@@ -24,6 +24,7 @@
 
 #include <sys/cdefs.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <unistd.h>
 
 __BEGIN_DECLS
@@ -35,9 +36,21 @@ pid_t xwaitpid (pid_t, int *status, int flags);
 void xpipe (int[2]);
 void xdup2 (int, int);
 int xopen (const char *path, int flags, mode_t);
+#ifndef __USE_TIME_BITS64
+# ifdef __USE_FILE_OFFSET64
+void xstat (const char *path, struct stat *);
+void xlstat (const char *path, struct stat *);
+void xfstat (int fd, struct stat *);
+# else
 void xstat (const char *path, struct stat64 *);
 void xlstat (const char *path, struct stat64 *);
 void xfstat (int fd, struct stat64 *);
+# endif
+#else
+void __REDIRECT (xstat, (const char *path, struct stat *), xstat_time64);
+void __REDIRECT (xlstat, (const char *path, struct stat *), xlstat_time64);
+void __REDIRECT (xfstat, (int fd, struct stat *), xfstat_time64);
+#endif
 void xmkdir (const char *path, mode_t);
 void xchroot (const char *path);
 void xunlink (const char *path);